Combined type-writing and computing machine



A. A. JOHNSON. COMBINED TYPE WRITING AND COMPUTING MAcHmE.

APPLICATION HLED AUGJ, I9I6.

W Y O m m M m Wm m I A V. Y M m 0 m m mk Q g LL 4 & m m m MK a a, W. \J W N W J gz z A. A. JOHNSON.

comsmao TYPE WRITING AND COMPUTING MACHINE.

APPUCATION Fuse AUG-2. 191s.

Patented. May 27, 1919.

4 SHEETSSHEET 2.

. a a Q N @(m INVENTOR= 1! ATTORNEY.

A. A. JOHNSON.

COMBINED TYP-E WRITING AND COMPUTING MACHINE.

' APPLICATION FILED AUG-2. ms.

FIG. 7.

WITN ESSES Patented May 27, 1919.

4 SHEETS-SHEET 3.

BY W

ATTO NEY.

A. A. JOHNSON.

comamw TYPE WRITING AND COMPUTING MACHINE.

AEFLICATIQN. FILED AUG-2. 1916.

Patented May 27, 1919.

4 SHEETS-SHEET 4.

INVENTOR- ATTOR Y.

WITN ESSES UNITED STATES PATENT OFFICE I A. JOHNSON, or new YORK, N. Y;. ASSIGNOB TO Ummnwoon'coMPo-rmq ma'cnmn compan or NEW YORK, N. Y.,,A CORPORATION or NEW roan Specification of Letters Patent.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Patented May 27, 1919.

Application filed August 2, 1918. Serial No. 112,645.

To all whom it may concern Be it known that I, ARTHUR A. JOHNSON,

a citizen of the United States, residing in the Bronx, city and State of New ork, have invented certain new and useful Imborough-of the Bronx, in the count provements in Combined Type-Writin and his invention has referenceto combined typewriting. and computing machines, and

in particular to machines provided with means, for automatically spacing to'point off the digits of numbers being written.

It has been proposed to provide mechanism whereby the typewriter carriage, as it travels through a computing zone, is automatically spaced at various times to point "off the digits of the number written,,so as to render the number easily readable, for instance between the millions digit and the hundred-thousands digit, the thousands digit and the hundreds digit, etc.

Machines of this character are usually provided with decimal tabulating mecha-' nism for assisting the operator in locating the typewriter carriage at the proper position for commencing typewriting; for example, should the operator desire to write 1,000 the thousands tabulating key-1s depressed, whereupon the carriage is released by said key and caused to travel under the tension of the driving spring until stopped by a column stop on the carriage striking .a cooperating stop moved into its path by the depression of the tabulating key, the column stop being settable on the carria e.

, The column stops, in order that they may easily set by the operator, are usually of the key-set type, in which one stop is provided for each letter space of the machine, the

stops being normally out of operative position and settable individually by means of a key at the key-boardof the machine, such as shown in the patent to Doane No.

1,157,683. These stops are not only used to position the carriage when writing numbers, but also to position the carriage in carrying out such other kinds of work as require the carriage to be started at a definite predetermined position.

M .In typewritiug and computing machines having mechanism which enables the car utilize the key-set tabulator stops for this purpose because of this very universality of the stops, for it will be seen that, since all of the stops must be identical in order that any one may be used in the ordinary manner and for the same purposes as the others, it would necessarily result that all of the stops which are set would operate the automatic spacing device, although the operation of said device is obviously not desired except when the carriage is in the computmg zone. y

An object of the invention is to overcome the above noted obstacle to the use of the key-set tabulator stops, and provide means whereby the set stops which control the positioning of the carriage at a computing zone, are also effective to control the doublespacin mechanism for punctuating a n'um ber, w ereas the other set tabulating stops are inefl'ective to cause such double-spacing.

This invention is herein disclosed as an improvement on the inventions disclosed in the application of Frederick A. Hart, Se-

rial No. 79,969, filed February 23 1916, (now Patent No. 1,282,823, dated ctober 29, 1918,) and the application of William g1. (grilnprecht, Serial-No. 89,0115, filed April In said applications, the mechanism includes an escapement wheel which cooperates with a fixed and loose dog both support.- ed by a pivoted dog rocker, the latter controlled by character keys, to effect letterfeed movements of the typewriter carriage. Said applications also include mechanism to effect double letter space movements of the typewriter carriage at predetermined positions where it is desired to space between the figures by automatically shifting a stop member, which controls the throw of the In accordance with the present invention,-

the tappeted bail may be controlled and operated by the set tabulatlng stops which control the positioning of the carriage atthe computing zone.

In order that the other set stops may not actuate the tappeted bail, the latter is normally held out of the path of said stops, but may be auto-- matically brought into operative position as the carriage reaches a computing zone. Where the machine comprises one or more totalizers, the means for setting the tappeted bail for operation may be carried for adjustment with the totalizers, and, more specifically, may comprise a cam carried by each totalizer and operable through suitable connections to swing the bail to operative position as the total izer comes into the computing zone, and retain it in operative position only until the totalizer passes beyond the computing zone. 7

In combined typewriting and computing machines the numeral keys are usually provided with, or operate means controlling the action of the computing mechanism between the numeral keys and the totalizer, and it has been found advantageous to provide means whereby the numeral keys may be disconnected from the computing mechanism so as not to cause undue wear of said mechanism when it is not desired to compute. A feature of the present invention is the provision of improved means whereby the numeral keys of'the typewriting ma-' chine may be normally disconnected from the computing mechanism, but which when the typewriter carriage approaches the computing zone causes the keys and the computing mechanism to be automatically connected. L

This may be done, for instance, in the manner illustrated in the accompanying drawlngs, in which a clutch is provided to normally break the train of connections between the keys and the totalizer; and in which is provided means, which, when the typewriter carriage approaches the computlng zone, causes the clutch toiconnect the keys and the computing mechanism.

Another feature is the provision of silencing means for the computing mechanism,

whereby, the means for automatically connecting the numeral keys and computing mechanism, may be made ineffective, even if already in the computing zone; Said .si-. lencing means may comprise a non-add key,v and a platen shift key, and means operable by either of said keys to takethe computing mechanism out of the control of the numera keys. I v

The invention provides means. whereby either the non addkey .or the platen-shifting key is operative to disable the connections between the numeral keys and the computing mechanism, and also to disable the double spacing means, so that when either the nonadd key or the shift key is actuated, both the computing mechanism and the double-spacing mechanism are silenced.

While the invention is illustrated as applied to a machine having tabulator stops of the key-settype, it will have many similar advantages wherever it is found desirable to have all of the tabulating stops identical, so that the operator cannot make an error by placing the wrong kind of a stop at any position on the machine. f

Other features and advantages will hereinafter appear.

In the accompanying drawings,-

Figure 1 is a part sectional side elevation of a combined typewriting and computing machine, constructed'in accordance with the principles of the present invention.

Fig. 2 is a skeleton perspective view, showing the numeral keys and the computing mechanism,comprising an actuating element which is operated by the numeral keys, the 9 key being depressed to effect a combined typewritlng and computing operation.

a Fig. 3 is a fragmentary front perspective view, showing particularly an escapement mechanism, a tappeted bail controlling the stop device for the escapement dog, column stops for awuating said tappeted-bail, and means controlled from the totalizer for rendering the double-space elfectingmeans and the computing mechanism efi'ective.

I a double-space throw of the loose dog.

Fig. 7 is a view similar to Fig. l with some of the parts omitted, and shows the tappeted bail shifted, by the totzilizer, to an, effective position where it can be engaged by the column stops for the purpose of shifting the variable stop device to effect double-- space movements of the carriage.

Fig. 8 is a schematic view of my invention as embodied in the present disclosure.

The typewriting mechanism which, in

most respects, is the same as that'found in the usual commerclal Underwood machine,

comprises a carriage 11 mounted to travel on front and rear guide rails 12 and 13, the carriage being propelled by a spring motor l l connected through a band f5tothe carshift-key 19 fulcrumed at 20 has an arm 21 extending upwardly behind the platen shift frame 22 fulcrumed at 23 and comprising'a shift rail 24 on which runs a roller 25 on the platen frame. WVhen the shift-key is de-;

pressed, the shift-frame 22 is operated to shift the platen to upper-case position.

Type-bars 26 carrying upper and lower case types 27, 28, are mounted on a curved fulcrum rod 29 to swing upwardly and rear- Wardly, to cause the types to strike against the front face of the platen. Alphabet keys 30 and numeral keys 31 are fulcrumed at 20 and are connected through bell-cranks 32 to their respective type-bars for actuating the latter.

The escapement mechanism which controls the letterfeed movements of the carriage, comprises an escapement wheel 33 having a one- Way driving connection through dogs 34 with an escapement pinion 35, which runs in mesh with a carriage rack I 36, the latter carried by arms 37 pivotally mounted on the carriage to permit the rack 36 to be swung off the escapement 'pinion. The escapement wheel 33 has a step-by-step movement controlled by a fixed dog 38 on a dog-rocker 39 and a loose dog 40 pivoted at I 41 to the dog-rocker. The latter is actuated at each type-stroke by means of a universal bar 42 in thepath of shoulders 43 on the type-bars, so that when a type-bar is operated and rises to printing position, the universal bar 42 swings the upper end of the dog-rocker rearwardly. The universal bar is returned by a spring 44.

Figs. 3 and 4 show the parts in their normal position of rest, wherein the escapement wheel is held by the loose dog 40 against Y which bears one'of the teeth 45 of the escape-v ment wheel. When a type-bar is operated and'the upper end of the dog-rocker 39 is swung rearwardly, as above noted, the fixed dog 38 is brought into the path of said tooth and holdsthe escapement wheel while the loose dog is moved rearwardly out of engagement with said tooth and thereby released to its-spring 46 (Fig. 4) which swings the dog to the left until arrested by a stop :7 (Fig. 5) in the path of a pin'48 on the As the actuated type-bar returns and permits the universal bar to be returned by its spring 44, the spring 46 returns the dogrocker 39,- thereby swinging the pivoted dog 40 forward in front of the next tooth of the escapement wheel, and also swings the fixed dog 38 forward out of the path of the wheel, permitting the latter, under the influence of the carriage spring, to be rotated the dist-ance of one tooth, that is, a normal letterspace distance. The pivoted dog, during this movement of the wheel, is swung to the right until. arrested by a stop on thedogrocker. 4

Tabulator mechanism may be provided comprising tabulator keys 49 connected to levers 5 0 pivoted at 51 to operate decimaltabulator stops 52, said stops being in the form of vertical bars or plungers mounted The stops 54 may be selectively set as de-" sired by any suit-able form of key actuated selective stop-setting mechanism, such as shown, for example, in the patent to Doane No. 1,157,683 above referred to.

When any one of the plunger stops 52 is actuated, it operates through a pivoted uni-- versal bar 56, connected through a link 57 to a lever 58 carrying a roller 59, to lift the rack bar 36. The carriage is thus released from the control of the escapement mechanism and permitted to run forward until arrested by a set sto 54 engaging the projected stop 52, there y positioning the rarriage at the column and the denominational position in the column, determined by the effective stops 54 and 52, respectively.

The computing mechanism may comprise one or more totalizers 60 each connected to travel with the carriage by means of a latch 61 engaging a rack bar 62 on the carriage, whereby the totalizer may be adjusted through letter-space intervals to any desired position lengthwise of the carriage. Each totalizer is provided with guide rollers 63 and 64 to run on a rail 65 on the machine frame. The totalizer comprises dial wheels 66 and computing wheels 67 actuated by the mechanism mounted on the machine frame, said mechanism comprising a master Wheel 68 which, during the writing of the several digits of a number, is brought into operatiwa relation with the computing wheels 67 successively and operates said wheels to run up on the dial wheels the number being written.

The operating means between the numeral keys 31 and the computing Wheels comprises difierent'iators 69 on the numeral-key-l'evers, each difierentiator being in the form ofa plate-with a. cam slot 70. An actuating element 71 comprises a rod 71 which extends across the machine in position to be actuated by any one of said diiferentiators, said rod being carried by swinging arms 72 journaled on a shaft 73. en any numeral key is depressed, the cam slot 'ZO-of the corresponding differentiator is moved downward over the rod 71, so that the latter is cammed forward (Fig. 2).. The upper ends of the slots are in stepped relation, the slots being so formed that the extent of movement 1m parted to the actuating element 71 will correspond-with; the value of the digit represented by theaotuated key, so that the computing mechanism will be operated a correspondmg extent.

The connections between the difi'eren-tia- 1 tors and the computing Wheels may comprise a floating lever 7 4 provided with a notch 7,5

to receive a pin 76 on an arm 72, at the proper time. Said lever 74: is pivoted at 7 8' to a lever 7 9 fulcrumed at 73. Said lever 74: when in its effective position is heldagainst the pin 76 by a spring 80, so that the forward movement of the actuating element 71 when a key is depressed, operates through the pin 76 and lever 74; to swing lever 7 9 about its fulcrum, and thereby move downwardly a link 81 connected to a rock arm 82 on a shaft 83.

A. second arm 84 on the shaft 83 is connected through a link 85 to a rack 86, which drives the pinion 87, fixed to a shaft 88.

gear wheel 89 which rotates with the pinion 87, is shiftable by means of'an add or subtract key into direct driving relation either to a pinion 90 or a pinion 91, the latter being connected to drive the master wheel 68.

. The pinion 90 may be at all times in driving relation with the pinion 91. In adding, the

gear wheel 89 operates through the pinions 90 and 91 to drive the master wheel in one direction, and in subtracting the gear wheel '89 drives the master wheel directly through the pinion 91 in the opposite direction. The

operation of the computing mechanism thus far described may be substantially like that disclosed in the application of Henry L. Pitman, No. 81,574: filed Mar. 2, 1916.

- Before a computingoperation, the totalizer may be adjusted to a position corresponding to that of a set tabulator stop 54.

The numeral keys may be operated in the -usual manner to print any .desired number. As each numeral key is depressed, it operates through the connections above described to rotate the master wheel 68 through a distance corresponding to the digit of the particular key operated. The master wheel drives the particular computing wheel 67 and dial wheel '66 which are at the time n being, in register therewith, to run up on the space at the decimal positions and between the digits in the hnndredsand thousands positions, etc., mechanism is provided for automatically effecting a double-space let-- ter-feed movement of the carriage when such positions are reached. For this purpose, the throw of the loose dog 40 of the escapement is variably controlled by a shiftable stop device 92'in the form of a lever pivoted ona stud 93 on the escapement frame, the lever being held against endwise displacement on the stud by nuts 94- Said stop device comprises the stop 17 heretofore referred to, which normally limits the throw of the dog 40, and a second stop 95 which may be aled to the arm 100 to bear downwardly thereon and thereby normally hold the stop device 92 in the Fig. i position, in which the .stop 47 is operative, the movement of the stop device by said spring being limited by a projection 104 thereon striking the escapement frame 105,

It will thus be seen that-the bail 96 in- .cluding the arm l00, constitutes a floating bell-crank lever, its floating fulcrum being the pivot points 97 on the frame 98, which frame is pivoted to swing from the tabulator frame 53 atthe points 99. Said frame 98 normally holds the tappeted bail'96 in position out of the path of the column-stops 54,

even though said stops are inset positions. This position of the partsisshown in Fig. 1,, wherein the arm 100 is shown in substantiallyfhorizontal position, while the tappets 96 are outof the path of any tabulator stop. This position of the tap-peted bail results from the joint actionof the frame 98, (which is held in the position of Fig. l by spring 123 to be describedlater) and the projection 104 on the stop device 92 acting to prevent spring, 103 from moving the tappeted bail to such position that the tappets would be in the path of any, set stop 54:.

As described in the Pitman application herein before mentioned, each totalizer is provided with a cam 106, the same length as the totalizer, each cam in said Pitman application serving as part of the carry-over mechanism. As the totalizer traverses a computing zone, the cam operates levers 107, pivoted on a rod 108, to move them serz'atim away from levers 109, which act as detents for carry-over wheels 110. The cam 106 in the totalizer enters the computing zone, the

cam 106 engages a lever 111 of the first order pivoted on the rod 108 and depresses the forward end of the lever. This causes the rear end of the lever to pull upwardly a link P2 connected to a lever 113 and swing the atter.

The lever 113 has an arm extending rearwardly from its. fulcrum and provided with an offset 118 which engages beneath an arm 117 of a bell-crank 115, also fulcrumed on the rod "114. The bell crank 115', is held against the offset 118 by a coil spring 116, (Fig. 3), which has one end overlying the lever 113, and the other overlying the arm 117, being coiled around the rod 114, so that when the lever 113 is operated by the cam 106, the bell crank is swung downwardly, around its fulcrum rod 114. The arm 117 is connected by a link 119 to an arm 120 extendingforwardly from the frame 98. Thus the 11 per end of the frame 98 is moved forward y through the-train of connections above described, and carries the tappeted bail 96' with it to bring the tappets 96 into the path of the column stops 54.

The lever 113 and bell crank 115 are located nearthe middle of the machine and are held in position on the rod 114 by collars 121 and 122 secured to the rod 114. The spring 116 which forms a flexible connection between the lever 1'13 and bell crank 115,'so that they always tend to move together, also holds'said I lever and bell crank laterally against the I; collars 121 and 122 respectively.

' To explain the operationof the double 5 acing mechanism, let it be assumed that t e totalizer is in the computing zone at the ten-thousands position, it being understood that the tappeted bail at this time is in its effective position (Fig.7). If now a-nu- 4 5 meral key is operated to print a digit in such position, the carriage will, upon the return of the key, advance a single letter-space distance, as usual; the escapement wheel,

during such advance of the carriage, o erat-.

ing to swing the loose dog fromthe ig.'5 position to the Fig. 4 position. During this movementof the carriage, however, a tappet 96 strikes the column stop 54,- and the bail 96 is swung rearwardly about its pivot 97 and through the link 101 swings the stop device 92 from the Fig. 5 position to the Fig. 6 position. The carriage is now at the thousands position, so that the next numeral key struck prints in the thousands place. During this printing operation, the upper end of the- 'dog-rocker 39 is swung rearwardly, as usual, to release the loose dog, which is now permitted to swing to the Fig. 6 position, owing to the position of the stop device 92, so that when the dog-rocker is returned, the loose dog permits the escapement wheel to advance a distance of two.

Fig. 4 position, whereby the carriage wil only be permitted a single letter-space move ment at the next printlng operation.

As above stated, the computing mechanism is normally disconnected or out of the control of the numeral keys. held in their disconnected position by a spring 123 (Fig. 1) which pulls on an. arm 124 on a rock shaft 125 and causes a finger 126 on a second arm 127 to engage with the lever 74 tohold the latter out of engagement with the pinv 76 on the indexing element 71. If a numeral key is now actuated, the actuating element will be moved idly by the difierent ator 69associated with the particular key operated. The spring 123 is located near the right hand side of the machine with its endv fastened by a pin 123 on the machine frame. spring 123, through the link 129, bell-crank arm 128, spring 116 and lever 113, normally holds the front end of the lever 111 in the path of the cam 106, and alsotends to move the bail 96* to ineffective position.

The computing mechanism is rendered effective by connecting the lever 74 with the actuating element'71, every time a totalizer passes through the computing zone, at which time the cam 106 on the totalizer engages with the lever 111 to cause an upward pull on link 112 and swing lever 113 and the bell I to rock the latter. When the shaft 125 is rocked, the arm 127 thereon carries the fin ger 126 out ofthe path of the lever 79 and permits the lever 74 to be swung into engagement with thefpin 76 on the actuating element 71. The spring 80 is, efiective to connect the lever 74 with the actuating element 71 and hold it in its connected position until the totalizer passes out of the computing zone, when the parts are returned to their normal position (Fig. 1), by the s ring 123. While returning to normal position, the finger 126 engages with the lever 74 to swing it against the tension of the spring 80 and disconnect it from the actuating element ,71.

The computing mechanism is silenced by a non-add key 131 connected throu h a link 132 to the arm 124 on the rocks aft 125. When the key 181 is moved to the The parts are I teeth, thereby effecting a double letter-space 'movement of the carriage. Thus the next operated numeral key will print in the hun- 7o l Incidentally the dotted line position indicated in Fig. 7, the

connecting pin 131 between said link and key is brought to a dead-center position in line with the pivot of the key -131 and the rear pivot of the link, as indicated by the broken line XX, Fig. 7. The rock shaft 125 is thus locked in position tohold the lever 74 down and thereby prevent operation of the computing mechanism. Thus it will be ,seen that, if a totalizer now passes through the computing zone, as shown in Fig. 7, the cam 106 will causea movement of the lever 113, but said movement will be ineffective to move the bell crank 115, owing to the connections 129, 130 between the bell crank and the rock shaft 125 which is at this time locked against movement as above pointed out. as the bell crank 115 is held in its inefiective position (shown in dotted lines, Fig. 7), the tappeted bail 96 at this time, is also prevented from being moved to its effective position.

To prevent computing when the platen is shifted to its upper case position, which is desirable when the lower case types on the numeral type bars are numerals and the upper case types are other characters, I have provided means controlled from the shift key 19, for locking the rock shaft 125 in its normal position, when the shift key is depressed. For this purpose a link 133 is pivoted to the platen shift frame 22 and .ex-.

tends forwardly therefrom and has a slotand-pin connection 134 at its forward end with an arm 135 on the rock shaft 125. When the'shift key is depressed, the link 133 is moved forwardly and locks the arm 135 and rock shaft :125 against movement Since the rockshaft 125 is thus prevented from moving from the Fig. 1 position.

while the platen is shifted to upper case position, it will also be understood that the bail 96 is prevented from being moved to its effective position. If a totalizer now passes throughthe computing zone, while the shift key is'depressed it will move only the lever 1 11, link 112 and the lever 113, the

' bell crank 115 being locked against movement', indirectly through link 133.

Variations may be resorted to within the scope of the invention, and portions of the lmlgrovements maybe used without others. 1 av1ng thus described my invention, I c aim:

1. In a combined typewriting and com- ['means for propelling said carriage, a com puting mechanism including an elementtravel-ing 'with said carriage to controldenommational selection v.of the computing mechanism, and a means rendered effective,

by said'traveling element, to engage with said tabul'ator stop.

It will be further seen that derin eflectlve to be engaged by said tabulator puting machine, the combination with computing'mechanism, of a carriage, a stop-bar carried thereby, column stops in effective positions on said stop-bar, means for propelling said'carriage, a variable feed escapement for said carriage, means for er- -mitting double-space movements of the carriage, and means for causing said doublespace-permitting means to be actuated by any of'said column stops in a computing zone.- i.

4:. Ina combined typewriting and computingmachine, the combination with computing mechanism, of a carriage, means for propelling said carriage, a variable feed escapement for said carriage, a tabulator stop, means controlled from said tabulator stop for permitting double space movements of the carriage at predetermined positions in its travel, said double -space-permitting means being normally ineffective, and means acting in a computingzone for rensaid double-space-permitting means stop.

5. Ina combined typewriting and computing machine, the combination with computin mechanism, of a carriage, means for prope ling said carriage, a variable feed escapement for said carriage, an adjustable element traveling with said carriage and determining a computing zone, means controlled from said adjustable element for permitting double space movements of the carriage at predetermined positions in its travel in said zone, said double space-permitting means being normally ineffective, and means for rendering said double spacepermitting means effective to be engaged by said adjustable element.

6. In a combined typewriting and computing machine, the combination with computing mechanism, of a carriage, means for propelling said carriage, a variable feed escapement for said carriage, two elements traveling with said carriage, one of said elements determining denominational selection of 'said computing mechanism, and the. other of said elements determining different positions for. said carriage, and means for permitting double-space movements of the carriage ,at predetermined positions in its travel, said double space permitting means being rendered effective by said denommatlonal determining element, after which itjis enga ed by the other of said two elements to ehect a double-space movement of the carria e.

7. In a combine typewriting and computing machine, the combination with com puting mechanism and denominational selecting means therefor, of a carriage, means for propelling said carriage, a variable feed escapement for said carriage, a cam engageable by said denominational selecting means, and means for permitting doublespace movements of the carriage at predetermined positions'in its travel, said double space-permitting means being normally ineffective and rendered effective by said cam.

8. In a combined typewriting and computing machine, the combination of a carriage, means for propellin said carriage, a variable feed escapement %or said carriage, two members namely, a totalizer and atabulator stop traveling with said carriage, and means for permitting double-space movements of the carriage at predetermined positions in its travel, said double-space-permitting means being normally ineffective and rendered effective by one of said mem-v bers, after which-it is engaged by the other of said two members to'effect a double-space movement of thec'arriage.

9. In a combined typewriting and computing machine, the combination with computin mechanism of .a carriage, means for prope ling said carriage, .a variable feed escapement for said carriage, two elements traveling with said carriage, one of said,

elements determining denominational selection of said computing mechanism, and the other of said elements determining different positions for said carriage, means comprising a pivoted member for permitting double-space movements of the carriage at predetermined positions in its travel, and a pivoted frame, said denominational determining element being effective to move said pivotedframe to bring said pivoted element carried thereby to an eifective position where it can be engaged by the other of said two traveling elements.

10. In a combined typewriting and com puting machine, the combination of a carriage, means for propelling said'carriage, a.

variable-feed escapement for said carriage, a totalizer and a tabulator stop traveling with said carriage, means comprising a tappeted bail for permitting double space movements-of thecarriage at predetermined positions in its travel, said tappeted bail being pivoted on a swinging frame, and

means engaging with the totalizer to move said pivoted frame and render said tappeted bail effective sothat it can be engaged by the tabulator stop to effect a double-space movement of the carriage.

11. In a combined typewriting and computing machine, the combination of a car.

puting machine, the combination of a car-' riage, means for propelling said carriage, a variable feed escapement for said carriage, means for permitting double-space movements of said carriage, a series of column stops, said double-space-permitting means being normally out of the path of said column stops, a plurality of totalizers arranged to travel with said carriage, and means engaged by said totalizers for rendering said double-space-permitting means effective, to be engaged by those column stops in columnar positions on the carriage where it is desirable to effect double-space movements of the carriage.

13. In a combined typewriting and computing machine, the combination with computing mechanism, of a carriage, means for propelling said carriage, a variable feed escapement for said carriage, means for permitting double-space movements of said carriage, a series of column stops, said double-space-permitting means being normally out of the path of said column stops, means for determining a plurality of computing zones during the traverse of said carriage, and means controlled by said zonedetermining means for rendering said double-space-permitting means effective, to be engaged by those column stops in columnar positions on the carriage where it is desirable to efiect double-space movements of the carnage.

14. In a combined typewriting and computing machine, the combination of a carriage, means for propelling said carriage, a

variable feed escapement for said carriage,

a plurality of totalizers arranged to travel with said carriage, means for efi'ecting double-space movements of said carriage, a

propelling said carriage, a variable feed escapement for said carriage, means for determining a plurallty of computing zones during the traverse of said carriage, means for effecting double-space movements of said carriage, a series of column stops, and means engaged means for rendering said doublespace-permitting means efiective to be engaged by said column stops, one at a time, when the carriage reaches the corresponding columnar positions. i

16. In a combined typewriting and computing machine, the combination with computing mechanism, of a carriage, means for propelling said carriage, a variable feed escapement for said carriage, a series of column stops for positioning the carriage at difi'erent columnar positions, means for permitting double-space movements, in co-f lumnar positions of said carriage, and a computing element at each columnar position in which the double-space movements of the carriage are to be effected, for rendering said double-space-permitting means effective.

17. In a combined typewriting and computing machine, the combination of a carriage, a variable feed escapement for said carriage, a totalizer, means controlled from said totalizer for effecting double space movements at predetermined positions in the travel of said carriage, said means comprising a lever of the first order, a link, a yielding element, a second link, a pivoted frame, and a tappeted bail carried by said pivoted frame.

18. In a combined typewriting and computing machine, the combination of a carnage comprlsing a platen, print ng mecha-" nism comprising numeral keys, computing mechanism including a master wheel,'a to-'- talizer, a variable escapement for said carriage, an actuating element, said actuating element being normally disconnected from the master wheel, means controlled from sald totalizer for connecting said actuating element with said master wheel and simul-' taneously made effective to vary the escapement, and a device manually operable to make said means ineffective.

19. In a combined typewriting and computing machine, the combination'of a carrlage comprisin a platen, means for propelling said carnage, a variable feed escapement for said carriage, a tabulator stop, means controlled from said tabulator stop for permitting double-space movements of the carriage at predetermined positions in its travel, computing mechanism normally ineffective, means for automatically rendering said computing mechanism and said double/space permitting means effective, and a key for preventing said computing mechanism and said double-space permitting means from being rendered efi'ective.

20. In a combined typewriting and computing machine, the combination of a care by said zone determining riage comprising a platen, means for pro pelling said carriage, a variable feed escapement for saidcarriage, a tabnlator stop, means controlled from said tabulator stop for permitting double-space movements of the carriage at predetermined positions in its travel, printing mechanism, case-shifting mechanism comprising a: key, said doublespace permitting means being normally inefi ective, means for automatically rendering said double-space permitting means effective when the carriage reaches a computing zone,

v and means for preventing said double-space permitting means being rendered eii'ective when the carriage reaches an adding zone while the case shifting key is in its actuated position.

21. In a combined typewriting and computing machine, the combination with computing mechanism, of a carriage, means for propelling said carriage, a variable feed esca-pement for said carriage, two elements traveling with said carriage, one of said elements determining denominational selection of said computing mechanism, and the other of said elements determining different positions for said carriage, means comprising a pivoted member for permitting doublespace movements of said carriage at predetermined positions in its travel, a pivoted frame, said denominational determining element being efiective to move said pivoted frame to bring said pivoted element to an effective po-sition'where it can be engaged by the other of said two traveling elements, and means for preventing said plvoted element from being'moved to an effective position.

22. In a combined typewriting and computing machine, the combination of a carriage, means for propelling said carriage, a variable feed escapement for said carriage, a tabulator stop, means for permitting double-space movements of said carriage at predetermined positions in its travel, said double-sparce permitting means being normally ineffective computing mechanism, means for rendering said double-space-permitting means effective when the carriage reaches a computing zone so that said double-spacepermitting means can be engaged by saidelement on said carriage engaging with saiddouble-Space-permitting means to effect the double-space movement of said carriage, printing mechamsm comprising numeral 'keys, cbmputing mechanism, an actuating element operable by said numeral keys, means for connecting said computing mechanism with said actuating element, said 'double-space-permitting means being norletter-space at a single step movement, tabulator mechanism comprising a stop on the carriage, and means'operated by the totalizer for causing the tabulator stop to operate the'first mentioned means.

i 25. The combination with keys, of a valuating mechanism, actuating mechanism, connectlons between the valuating mechanism' and the actuating mechanism nonnally inoperative, a carriage, tabulatlng mechanism for said carriage comprising a stop, mechanism for controlling the movement of the carriage adapted to be operated by said stop but normally inoperative, a totalizer on the carriage, and means controlled by the totalizer as it reaches a point in its travel with the carriage for making operative the connections between the valu-ating mechanism and the actuating mechanism, and also causing the mechanism for controlling the movement of the. carriage to become operative.

26. In a typewriting and computing machine, the combination with a traveling carriage, of tabulator stops, one for each letter- 'space position of the carriage, said stops normally inoperative, and settable to operative position, atotalizer adjustable along the carriage, and means controlled by the totalizer and brought into activity as the totalizer enters the adding zone and dependent upon the tabulator stop for automatically skipping the carriage through a punctuation space While a number is being written.

27. In a combined typewriting and computing machine, the combination with a trol said double-spacing means and cause the same to be operative only by the set stop to which the totalizer is adjusted.

28, In a combined typewriting and computing machine, the combination with a paper carriage and means for propelling the carriage, escapement mechanism controlhng the letter-feed movements of the carriage, computing mechanism, atotalizer arranged to travel with the carriage, tabulating mechanism comprising stops settable toarrest the carria e at different ositions said totalizer adjustable to locate the printing zone at any of said stop positions, mechanism to effect double letter space movement of the carriage at predetermined points during the rinting of a number, controlling means or said double-spacing mechanism, said controlling means movable intoand out of position to be actuated by the set stops, and means adjustable with the totalizer to hold said means in operative position while the carriage is in the printing zone.

29. Ina combined typewriting and computing machine, the combination with a carriage and means for propelling it, of escapement mechanism for effecting letter feed movements of the carriage, tabulating mechanism comprising stops settable-to arrest the carriage at predetermined positions, numeral type keys, computing mechanism actuated by said keys, a totalizer connected to'travel with the carriage and adjustable to locate the computing zone at any posi tion at which-the carriage is arrested by a set tabulator stop, mechanism for effecting double letter space movements of the carriage, a controlling device for said double spacing mechanism movable into and out of an operative position in the path of in operative relation to the tabulator stops while the totalizer is in the. computing zone, whereby said double spacing mechanism is operable to space a numeral being written while the carriage is in the computing zone;

30. In a combined typewriting and computing machine, the combination with a carriage and means for propelling it, of escapement mechanism for 'efl'ecting letter feed movements'of the carriage, tabulating mechanism comprising stops settable to arrest the carriage at predetermined positions, numeral type keys, computing mechanism actuated by said keys, a totalizer connected to travel with the carriage and adjustable to locate the computing zone at any position at which the carriage is arrested by a set tabulator stop, mechanism for efiecting double letter space movements of the car- 'a key-for silencing the computing mecha-- .nism, and means actuated by said key for disabling the double spacing mechanism.

a5 shift key,

' maintain said controllingdevice in opera-' tive relation to the tabulator stops while the totali'z'er 'inthel computing zone, whereby sa l 'ble-ispacin mechanism is operable to space a num'era being written while the carriage. is in the computlng zone,

3-11 {Ina combined typewriting and computing machine, the combination with a carrlage and means for propelling it, of escapement mechanism for effecting letter feed movementsof the carriage, tabulating mech- 1 I Ithe'ctimiage at predetermined positions, nu-

anismjggcomprising. stops set't'able to arrest type keys, computing mechanism aca by... said keys, a totalizer connected "tra l with the'carriage' and adjustable oca te" the computing zone at any-posi- 't ii'at which the carriage is arrested by a 1 set tabulator stop, mechanism for effecting ble letter space. movements of the 'car-.

11 r agga controlling device. for said double j spacing mechanism movable. into and out of j an operative position in the path of the set tabulator stops andnormally in an inoperatime position, means adjustable with said totalizer and operable automatically to maintain said controlling device in operative re; lation to the .tabulatorstops while the'to- I talizer is i'n the computing zone, whereby said'dou ble'spacing mechanism is operable.

"to space anumeral being written while the carriage is in'the computing zone, .a case and means actuated thereby for disabling said double space mechanism.

32. In a. combined typewriting and computing machine, the combination with a carriage and means for propellingit, of escapement mechanism for effecting letter .feed movements of the carriage, tabulating mechanism comprising stops settable to arrest the carriage at predetermined positions, numeral type keys, computing mechanism actuated bysaid kevs, a .totalizer connected to travel withthe carriage and adjustable to locate has -ments of the carriage,

the computing zone at any ppsition at which the carriage is arrested by a set tabulator stop, mechanlsm for effecting double letter space movea controlling device for said double spaclng mechanism movable into and out of an operativeposition .in the path of the set tabulator stops and normally in an inoperative position, .and means I 7. adjustable. with said totalizer and operable automatically to maintain said controlling the tabulain the'comwhereby said double spacing operable to space a numeral while the carriage is. in the device. inoperative relation to tor stops while the totalizer is puting 'zone, mechanism is being written f I computing zone, a case shiftkey, a non-add key, and means-actuated either the shift key or the non-ad}? key to prevent the double spacing mec anism from operating while the key is in operative position.

33. In a combined typewriting and computing .machine, the combination with a carriage, of numeral printing keys, a m-aster wheel, computing mechanism for.dr1ving said master wheel and normally out of the control of said keys whereby the keys may 'be operated without actuating the computing mechanism, means comprising a yielding connection for automatically bringing said computing mechanism within the control of the numeral keys as the carriage enters a computing zone and taking said computingv mechanism out of the control of the numeral keys as the carriage passes beyond the computing .zone, and means, including a non-computing key, to overcome said connection totake the computing mechanism out of the control ofthe numeral keys.

34. In a combinedtypeWri'ting and computing machine, the combination with a carriage, of numerahprinting keys, computing mechanism normally outof the control of saidkeys whereby the keys may be operated without actuating the computing mechanism, means for automatically bringing said computing mechanism within the control of the numeral keys as the carriage enters a computing zone and taking said computing mechanism out of the control of the numeral keys as the carriagepasses beyond the computing zone, a case shift key, and means operated thereby to take the computing mechanism out of the control of the numeral keys.

' 35. In a combined typewriting and computing machine, the combination with a carriage and a platen thereon, of types to print on the platen, keys to actuate said types including numeral keys, a master wheel, mechanism for driving said master wheel, normally inefi'ective means for transmitting motion from the numeral keys to said driving mechanism, a device, including a yielding connection, for making said transmitting means effective while the carriage is in'the computing zone, means, including a key, to.. overcome said connection and maintain said transmitting means inelfective while the carriage is in agcomputing zone, and a case-shift actuated device to make saidtransmitting means ineffective.

36. In a combined typewriting and computing machine, the combination with a carriage and means for propelling it, of letter feed mechanismgcontrolling the letter feed movements of thecarria-ge, mechanism for effecting doubleletter space movements of the carriage, tabulating mechanism comprlsing stops settable to arrest the cara riage at predetermined positions, numeral printing keys, computing mechanism, a totalizer settable at different positions along the carriage to locate the computing zone at any one of said positions, a tappeted device movable into and out of position to be actuated by the said tabulator stops and normally held out of operative position, said tappeted device operable to actuate said double spacing'mechanism, and means adjustable with the totalizer for maintain-- ing said device in operative positionwhile the carriage is in a computing zone, whereby the double spacing mechanism is controlled only from the stop which positions the carriage at a computing zone.

37. In a combined typewriting and computing machine, the combination with a carriage and means for propelling it, of letter feed mechanism controlling the letter feed movements of the caniage, mechanism for ellecting double letter space movements of the carriage, tabulating mechanism comprising stops settable to arrest the carriage at predetermined positions, numeral printing keys, computing mechanism, a totalizer settable at different positions along the carriage to locate the computing zone at any one of said positions, a tappeted device movable into and out of position to be actuated by the said tabulator stops and normally held out of operative position, said tappeted device operable to actuate said double spacing mechanism, and means adjustable with the totalizer for maintaining said device in operative position while the carriage is in a computing zone, whereby the double spacing mechanism is controlled only from. the stop which positions the carriage at a computing zone, and means connecting the numeral keys with the computing mechanism to cause the latter to be actuated by the numeral keys while in the computing zone, said keys being automatically disconnected from the computing mechanism while the carriage is outside of the computing zone.

38. In a combined typewriting and com puting machine, the combination with computing mechanism and a traveling typewriter carriage for determining computing zones for said computing mechanism, of tabulator stops for said carriage, and means for selectively enabling any one of said tabulator stops to cause a double feed of said carriage in a computing zone.

39. In a combined typewriting and computing machine, the combination with computing mechanism, a traveling typewriter carriage, and tabulator stops carried thereby, of denominational selecting means for said computing mechanism connected to travel with said carriage, mechanism for eilecting double letter-space movements of said carriage, adevice for controllingsaid double-spacing mechanism, movable into and out of operative positionin the path of said tabulator stops and normally in inoperative position with respect'thereto, yielding con nections between, said denominational selecting means and said controlling device opcrable to move said controlling device into operative relation with the tabulator, stops whereby-said double-spacing mechanism may be operable to space a number being.,:written while'the typewriter carriage is in a carriage, and tabulator stops carried thereby, of denominational selecting means for said computing mechanism connected to travel with said carriage, mechanism for effooting double letter-space movements of said carriage, a device for controlling said doublespacing mechanism, movable into and out of operative position in the path of said tabulator stops and normally in inoperative position with. respect thereto, yielding connections between said denominational selecting means and said controlling device operable to move said controlling device into operative relation with the tabulator stops whereby said double-spacing mechanism may be operable to space a number being Written while the typewriter carriage is in a computing zone, a non-add key, and means controlled by the said non-add key for rendering said controlling device inettective, said means acting on the connections between said denominational selecting means and said controlling device to prevent movement of said connections between the point of yield therein and said controlling device.

4-1. In a combined typewriting' and computing machine, the combination with computing mechanism, a traveling typewriter carriage, and tabulator stops carried thereby, of denominational selecting means for.

said computing mechanism connected to travel with said carriage, mechanism for offecting double lettenvspace movements of said carriage, a device for controlling said double-spacing mechanism, movable into and out of operative position in the path of said t-abulator stops and normally in inoperative position with respect thereto, yielding connections between said denominational selecting means and said controlling device operable to move said controlling device into operative relation with the tabulator stops whereby said double-spacing mechanism may jputing zone, a non-add key and. a case-shift key, and means controlled-by both the nonadd. key and said case-shift key for rendering said controlling device ineffective, said means aotmg on the connections between said denominational selecting means and said controlling device to prevent movement 10 of said connections between the point of yield therein and said controlling device. e ARTHUR A. JOHNSON.

Witnesses: I

JOHN F. RULE, EDITH B. LIBBEY.

copiesloi this patent may be obtained tor the cents each, by addressing the Commissioner of Patents,

- Washington, D. 0. 

